diff --git a/CHANGELOG.md b/CHANGELOG.md
index cdbe031d..667220b2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+## [2.38.4] - 2024-06-11
+
 - Workaround Cygwin bash's buggy behavior. ([#534](https://github.com/taiki-e/install-action/pull/534))
   This fixes an installation issue when default bash was overridden like the following:
 
@@ -2316,7 +2318,8 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.38.3...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.38.4...HEAD
+[2.38.4]: https://github.com/taiki-e/install-action/compare/v2.38.3...v2.38.4
 [2.38.3]: https://github.com/taiki-e/install-action/compare/v2.38.2...v2.38.3
 [2.38.2]: https://github.com/taiki-e/install-action/compare/v2.38.1...v2.38.2
 [2.38.1]: https://github.com/taiki-e/install-action/compare/v2.38.0...v2.38.1